Swamp, a basic land card from the Shadows Over Innistrad set of Magic: The Gathering, holds an Unknown rarity and is designated as card #291. As a fundamental resource for players, it provides black mana essential for casting spells. Currently, its market value is approximately $0.12, reflecting its common use in various decks rather than its collectible potential. Collectors and players alike recognize its role in supporting a diverse range of strategies.